Data mirror volume verification
US9996434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2016 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Oct 28, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
For volume verification, an apparatus is disclosed. The apparatus includes a data mirror that generates volume pairs of first and second volumes by mirroring track data from first volumes stored by a first device to second volumes as mirrored track data stored by a second device. The apparatus includes an activity monitor that monitors update activities for volume pairs and identifies volume pairs having substantial residual counts of update activities as indicated by a pre-determined residual count threshold. The apparatus includes a data verifier that selects one or more identified volume pairs for evaluation, compares the track data in the first volume to the mirrored track data in the second volume, and if a match discrepancy is determined, then re-copies the track data from the first volume to the second volume so as to correct and repair the mirrored track data in the second volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.